Bumpers: active shutters/grill
NewRisk. A detached bezel can become a road hazard for other vehicles, increasing the risk of a crash.
NHTSA has logged 0 owner complaints about the 2025 Mack Pioneer PR (4). It is covered by 12 safety recalls, and for recall 24V-792 the manufacturer reports only 73% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through October 1, 2026. Updated daily.
0 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. A detached bezel can become a road hazard for other vehicles, increasing the risk of a crash.
Risk. A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
Risk. Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, increasing the risk of a crash.
Risk. A loose or unsecured load lock bar can result in a loss of cargo, creating a road hazard and increasing the risk of a crash.
Risk. High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
Risk. Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.
Risk. A loss of steering control increases the risk of a crash.
Risk. Insufficient air volume can reduce braking performance and increase the risk of a crash.
Risk. Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System)…
Risk. An improperly tightened seat pedestal and seat belt attachment may not restrain the occupant as intended, increasing their risk of injury during a crash.
Risk. The ball stud can separate from the vehicle becoming a road hazard, increasing the risk of a crash.
Risk. A sudden loss of steering control increases the risk of a crash.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mack.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Pioneer PR (4) median. How we score
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.